Wire forming implement



1967 E. GAWURA 3,357,460

WIRE FORMING IMPLEMENT Filed Oct. 12, 1965 FIG. 6 4g INVENTOR 1 7 EUGENEGAWURA ATTORNEY United States Patent 3,357,460 WIRE FORMING IMPLEMENTEugene Gawura, 6927 Coleman, Dearborn, Mich. 48126 Filed Oct. 12, 1965,Ser. No. 495,282 2 Claims. (Cl. 140106) ABSTRACT OF THE DISCLOSURE Awire forming hand tool comprising a pair of pivoted jaw members carryingmating dies which shape a terminal offset in straight end sections ofwire when the jaw members are squeezed together.

This invention relates to wire forming implements generally, and moreparticularly to a hand tool for placing a terminal off-set in a sectionof wire.

Wire forming operations are usually performed by machine dies,especially when heavier gauges of steel wire are involved. This methodis generally less costly, much more accurate, and far better adapted formodern production techniques. However, in servicing many productionitems, such as power lawn mowers, it is sometimes necessary to replacecomponents which are customarily not stocked by repair shops or partsdepots. It is therefore necessary either to obtain parts from themanufacturer or attempt to duplicate the component by the use of shoptools and equipment which are customarily available.

The former practice is usually time consumming, and the latteralternative is generally somewhat involved and consequently quiteexpensive. Since neither practice represents a completely satisfactorysolution to the problem, the applicants primary objective in the presentinvention is to provide a special purpose hand tool for use in mowerrepair shops to form the characteristic terminal offset required on mostpower mower throttle wires.

Another object of the invention is the provision of a hand tool of thetype previously described, which is extremely effective, and very simpleto use and operate.

A further object of the invention is to provide a hand tool of the typepreviously described, which is strongly constructed, and relativelyinexpensive to produce.

Other features and advantages of the invention will become apparentafter thorough consideration of a detailed description of the samecomposed with reference to the drawings constituting a part of thisapplication, and in which:

FIGURE 1 is a side elevation view of the applicants hand tool, showingthe pivoted jaw members in an open position, and the lateral slot in theupper die.

FIGURE 2 is an elevation view taken substantially on plane 22 in FIGURE1, showing the cavity in the upper die, and the characteristic shape ofthe lower die or punch.

FIGURE 3 is an elevation view similar to FIGURE 2, showing the formingdies in a closed position on a section of wire.

FIGURE 4 is an elevation fragmentary view similar to FIGURE 1,disclosing a modification of the applicants invention, and showing thealigned lateral slots in the forming dies.

FIGURE 5 is a side elevation view similar to FIGURE 4, showing theforming dies in a closed position on a section of wire.

FIGURE 6 is an elevation view taken substantially on plane 6-6 in FIGURE4, showing the depth of the aligned lateral slots in the forming dies.

FIGURE 7 is an elevation view showing a section of wire having aterminal offset formed by the applicants hand tool.

For a more detailed description of the invention reference is made tothe drawings in which numerals 10 and 12 designate respectively upperand lower jaw members pivotally connected together by a rivet 14. Ahollow gripping handle 16 is formed integral with the upper jaw member10. A downwardly disposed gripping handle 18, having a U-shaped crosssection, is pivotally connected to the lower jaw member 12 by a rivet20.

A fulcrum bar 22 is pivotally connected on one end to the grippinghandle 18 by a rivet 24, and slidably positioned in the other handle 16.A knurled head adjusting screw 26 is threadably engaged in the hollowhandle 16, and turned into contact with the free end of the fulcrum bar22. A coil spring 28 is connected at one end on a hook 30 in the hollowgripping handle 16, and at the other end to the lower jaw member 12intermediate the two rivets 14 and 20.

A pair of dies 32 and 34 are fixed on the upper and lower jaw members 10and 12 respectively. The die 32 or matrix has therein a cavity 36 withone of the defining side walls 38 outwardly disposed. A lateral slot 40,in the upper die 32, communicates with the cavity 36 therein provided.The lower die 34 or punch has a tapered side 42 the angle of whichmatches that on the outwardly disposed wall 38 in the upper die 32.

An upwardly faced concave seat 44 is provided in the lower jaw member 12for reception of the upper die when the jaws are in the closed positionshown by FIGURE 3.

The modification disclosed in FIGURES 4, 5 and 6 differs from theembodiment of FIGURES 1 through 3, in that the wire stock is fed intothe jaw members 10 and 12 in a longitudinal rather than a transversemanner. In this modification, two dies 46 and 48 are mounted on theupper and lower jaw members 10 and 12 respectively, in an offsetrelationship. Laterally aligned longitudinal slots 50 and 52 areprovided in the two dies 46 and 48 respectively.

This completes a description of the structural details of the inventionherein disclosed; however, to insure a fuller comprehension of thesubject matter, a discussion is immediately hereinafter directed to themanner in which the device is used to accomplish its intended function,and achieve the objectives set forth in the introductory portion of thisspecification. Since both embodiments of the applicants inventionfunction in substantially the same manner, the discussion of use will belimited to the disclosure in FIGURES 1, 2 and 3.

In use, a section of wire 54 is inserted into the lateral slot 40 of thedie 32, and positioned as shown in FIGURE 2 of the drawings. The handles16 and 18 are then squeezed so as to close the jaw members 10 and 12,and bring the dies 32 and 34 into the mating position shown in FIGURE 3.In moving to this position, the die 34 forces the wire 54 into thecavity 36 of the die 32, thereby providing the terminal offset shown inFIGURES 3 and 7.

Based upon the foregoing discussion, the applicant is of the opinionthat his invention has fulfilled a long-felt need in the field of handtools, and that he has accordingly made a valuable contribution to therelated art. However, while the invention was described with referenceto the structural details of a limited number of embodiments, it will beappreciated by those familiar with the art, that the principles involvedare susceptible of numerous other practical adaptations.

Therefore, I claim as new and desire to secure by Letters Patent:

1. A Wire forming implement comprising twopivoted jaw members having anopen and a closed position, means for manipulating the jaw members, adie on one of the jaw members having therein a cavity one side wall ofwhich is outwardly disposed, a transverse slot in the die for receivingand positioning an end section of wire across the cavity, and a die onthe other jaw member shaped to fit into the cavity of the firstmentioned die when the jaw members are moved to a closed position, suchsecond mentioned die member forcing the end of the wire to slide alongthe outwardly disposed side Wall to the bottom of the cavity therebyforming a terminal offset in the wire.

2. A wire forming implement comprising two pivoted jaw members having anopen and a closed position, means for manipulating the jaw members, adie on one of the jaw members having in one side a longitudinal slottherethrough for receiving an end section of wire, and a die on theother jaw member disposed laterally from the first mentioned die andhaving a slot in one side aligned with the slot in the first mentioneddie when the jaws are in an open position, such slot in the secondmentioned die receiving and positioning the wire so that when the jawmembers are moved toa closed position a terminal offset is formed in thewire.

References Cited CHARLES W. LANHAM, Primary Examiner.

L. A. LARSON, Assistant Examiner.

1. A WIRE FORMING IMPLEMENT COMPRISING TWO PIVOTED JAW MEMBERS HAVING ANOPEN AND A CLOSED POSITION, MEANS FOR MANIPULATING THE JAW MEMBERS, DIEON ONE OF THE JAW MEMBERS HAVING THEREIN A CAVITY ONE SIDE WALL OF WHICHIS OUTWARDLY DISPOSED, A TRANSVERSE SLOT IN THE DIE FOR RECEIVING ANDPOSITIONING AN END SECTION OF WIRE ACROSS THE CAVITY, AND A DIE ON THEOTHER JAW MEMBER SHAPED TO FIT INTO THE CAVITY OF THE FIRST MENTIONEDDIE WHEN THE